diff --git a/README.rst b/README.rst
index 41404c9d2..381a3aed0 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,8 @@
 .. image:: doc/logo/artiq.png
 .. image:: https://travis-ci.org/nist-ionstorage/artiq.svg
     :target: https://travis-ci.org/nist-ionstorage/artiq
+.. image:: https://coveralls.io/repos/nist-ionstorage/artiq/badge.svg?branch=ci
+    :target: https://coveralls.io/r/nist-ionstorage/artiq?branch=ci
 
 ARTIQ (Advanced Real-Time Infrastructure for Quantum physics) is a
 next-generation control system for quantum information experiments. It is